1. Chemistry: Getting to know the elements

2. H Hydrogen
C Carbon
N Nitrogen
O Oxygen
P Phosphorus
S Sulfur

3. Symbol Latin English
Ag argentum Silver
Au aurum Gold
Sn stannum Tin
K kalium Potassium
Hg hydrargyrum Mercury
Pb plumbum Lead

4. Element Symbol Atomic NumberTi C Na Al K Hg N B S Ca

5. Uses of some Elements Si: Silicon
Silicon is one of man's most useful elements. In the form of sand and clay it is used to make concrete and brick.
Useful refractory material for high-temperature work
It is used in making enamels, pottery, etc.
Silica, as sand, is a principal ingredient of glass
For use in transistors, solar cells, rectifiers, and other solid-state devices (electronics)

6. Ca: Calcium
reducing agent in preparing other metals such as thorium, uranium, zirconium
Used as an alloying agent for aluminum, beryllium, copper, lead, and magnesium alloys
Occurs abundantly as limestone, gypsum, and fluorite

7. C: Carbon
In graphite form carbon is used for writing utensils
In diamond form carbon is used for jewelry

8. Ag: Silver
Sterling silver is used for jewelry, silverware
Photography
Dental alloys
Used to make solder
Electrical contacts
Batteries
Mirrors

9. Hg: Mercury
Thermometers and barometers
Making mercury-vapor lamps and advertising signs.
Mercury switches and other electronic apparatus.
Pesticides
Dental preparations, anti-fouling paint, batteries, and catalysts.

10. Pb: Lead Used as a sound absorber
Used as a radiation shield around X-ray equipment and nuclear reactors, and is used to absorb vibration.
White lead, the basic carbonate, sublimed white lead, chrome yellow, and other lead compounds are used extensively in paints
Lead oxide is used in producing fine "crystal glass" and "flint glass”

11. Cu: Copper
The electrical industry is one of the greatest users of copper. Copper wire
Iron's alloys -- brass and bronze -- are very important: all American coins are copper alloys and gun metals also contain copper.
Copper has wide use as an agricultural poison and as an algaecide in water purification.

12. Al: Aluminum
Used for kitchen utensils, outside building decoration, and in thousands of industrial applications where a strong, light, easily constructed material is needed.
Used in electrical transmission lines because of its light weight
These alloys are of vital importance in the construction of modern aircraft and rockets.
Alloys are used to coat telescope mirrors and to make decorative paper, packages, and toys.

13. What is an atom?
Atoms are the basic building blocks of ordinary matter.
Atoms are the smallest unit of matter that retain the chemical properties.

14. What is a proton and where is it located in an atom?
A proton is a positively charged particle found in the nucleus of an atom

15. What is an electron and where is it located in an atom?
Electrons are negatively charged particles that surround an atom’s nucleus.

16. What is a neutron and where is it located in an atom?
Neutrons are uncharged particles found within atomic nuclei (nucleus). Neutrons have a negative and a positive charge

17. An Atom of Carbon

18. Formulas and Elements
Water
H2O
Hydrogen and oxygen

19. Sodium Chloride
NaCl
Sodium and chlorine

20. Sodium bicarbonate
NaHCO3
Sodium, hydrogen, carbon and oxygen

21. Silicon oxide
SiO2
Silicon and oxygen

22. Carbon dioxide
CO2
Carbon and oxygen

23. Sulfuric acid
H2SO4
Hydrogen, sulfur and oxygen

24. Methane
CH4
Carbon and hydrogen

25. Chemical Formulas Sand: SiO2 Baking soda: NaHCO3 Ammonia: NH3
Vinegar: CH3COOH